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    • 2. 发明申请
    • LOUDSPEAKER ASSEMBLY FOR HEADREST
    • WO2023083711A1
    • 2023-05-19
    • PCT/EP2022/080799
    • 2022-11-04
    • PSS BELGIUM NV
    • CORYNEN, David
    • H04R1/30B60N2/879H04R5/02H04R1/34
    • A loudspeaker assembly including: a headrest having a front face facing in a forwards direction and a rear face facing in a rearwards direction, wherein the rearwards direction is opposite to the forwards direction, wherein the headrest is for use with a user's head located in front of the front face of the headrest; a bass dipole loudspeaker mounted to the headrest, wherein the bass dipole loudspeaker includes a drive unit and a diaphragm, wherein the diaphragm has a first radiating surface and a second radiating surface, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm, wherein the drive unit is configured to move the diaphragm at bass frequencies such that the first and second radiating surfaces produce sound at bass frequencies; a bass waveguide configured to guide bass sound produced by the first radiating surface out from the front face of the headrest via at least one forward-facing opening provided by the bass waveguide, wherein the bass dipole loudspeaker is mounted to the headrest such that bass sound produced by the second radiating surface is able to propagate out from the rear face of the headrest. The bass dipole loudspeaker is mounted to the headrest such that the first radiating surface of the diaphragm is, when the diaphragm is at rest, closer to the rear face of the headrest than to the front face of the headrest. The area of the at least one forward-facing opening is larger than the area of the first radiating surface as projected onto a plane perpendicular to a movement axis of the bass dipole loudspeaker.